Media Independent Interface (MII)
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Media Independent Interface (MII)

pinout

 40 pin hi-density D-SUB female
40 pin hi-density D-SUB female connector  at the network device
Pin Name Dir Description
1V---+5 Vdc/ 3.3 Vdc
2MDIO<->Management Data I/O
3MDC-->Management Data Clock
4RxD<--Rx Data
5RxD<--Rx Data
6RxD<--Rx Data
7RxD<--Rx Data
8Rx_DV<--Rx Data Valid
9Rx_CLK<--Rx Clock
10Rx_ER<--Rx Error
11Tx_ER-->Tx Error
12Tx_CLK<--Tx Clock
13Tx_EN-->Tx Enable
14TxD-->Tx Data
15TxD-->Tx Data
16TxD-->Tx Data
17TxD-->Tx Data
18COL<--Collision
19CRS<--Carrier Sense
20V---+5 Vdc/ +3.3 Vdc
21V---+5 Vdc/ +3.3 Vdc
22GND---Ground
23GND---Ground
24GND---Ground
25GND---Ground
26GND---Ground
27GND---Ground
28GND---Ground
29GND---Ground
30GND---Ground
31GND---Ground
32GND---Ground
33GND---Ground
34GND---Ground
35GND---Ground
36GND---Ground
37GND---Ground
38GND---Ground
39GND---Ground
40V---+5 Vdc/ +3.3 Vdc

Note: Direction is DTE (Network device) relative DCE (Transciever)

40 pin hi-density D-SUB male
40 pin hi-density D-SUB male connector  at the transciever

Source:www.pinouts.ru


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